Logbook week 6

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The building features a joist flooring system and I beam joints. (There is a slope near these founda:ons to keep it from becoming wet.) Waffle concrete slab for the founda:ons. Created by u:lising polystyrene then pouring the concrete and removing this when set. LVL beams to support upper level flooring there is a hole in each beam to thread u:li:es. GROUP 2 CONSTRUCTION SITE Has stable soil, thus shallow foo:ngs are u:lised. Beams are bounded by adhesive and are also nailed. (Subflooring nailed to :mber joists). Eventually the house will have a brick wall on the outside. It is a wooden framed building. With a one way spanning system. Small type house (approx. 20 feet span range). There are currently several temporary frames suppor:ng the structure. Stones placed around the site for safety reasons and due to the high amount of trucks travelling through. Zoe Brain 639 607

description

Zoe Brain

Transcript of Logbook week 6

Page 1: Logbook week 6

The  building  features  a  joist  flooring  system  and  I  beam  joints.  

(There  is  a  slope  near  these  founda:ons  to  keep  it  from  becoming  wet.)  

Waffle  concrete  slab  for  the  founda:ons.  Created  by  u:lising  polystyrene  then  pouring  the  concrete  and  removing  this  when  set.    

LVL  beams  to  support  upper  level  flooring-­‐  there  is  a  hole  in  each  beam  to  thread  u:li:es.  

GROUP    2  CONSTRUCTION  SITE  

Has  stable  soil,  thus  shallow  foo:ngs  are  u:lised.  

Beams  are  bounded  by  adhesive  and  are  also  nailed.  (Subflooring  nailed  to  :mber  joists).    

Eventually  the  house  will  have  a  brick  wall  on  the  outside.     It  is  a  wooden  

framed  building.    With  a  one  way  spanning  system.  Small  type  house  (approx.  20  feet  span  range).  

There  are  currently    several  temporary  frames  suppor:ng  the  structure.  

Stones  placed  around  the  site  for  safety  reasons  and  due  to  the  high  amount  of  trucks  travelling  through.  

Zoe  Brain  639  607  

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Needed  to  be  flaYened  out  as  was  on  a  hilly  area  of  30-­‐40  degrees.    

Steel  frame  has  been  used  for  the  main  structure.  

Uses  C  beams  and  has  metal  strap  :es.  

It  also  has  a  retaining  wall  (concrete  block).      

Group    3  Construc:on  Site  

Hebel-­‐  sand,  lime  and  cement  wall  system-­‐  prevents  fire  and  also  provides  sound  insula:on.  

Self  closing  fire  doors.  

Metal  bars  for  temporary  structure  as  opposed  to  the  wooden  ones  featured  in  our  site.  

Mainly  comprises  steel  and  wood  

U:lises  smart  joists,  fibreboard  and  chipboard.  

Metal  tooth  plate  connec:ons.    

STEEL  has  good  COMPRESSIVE  and  TENSILE  proper:es.  

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Page 3: Logbook week 6

•  A  TILED  ROOF:  Should  be  constructed  at  pitches  greater  than  15°-­‐  this  is  so  water  can  run  off.  Below  is  a  sketch  of  a  roof  system  and  you  can  see  the  various  slopes  that  can  be  u:lised.    

 

 

•  DETERMINE  WHETHER  MEMBERS  ARE  IN  TENSION  OR    

Sketch  **,  Zoe  Brain,  (2014)  

The  above  sketch  shows  the  difference  in  roofing  systems  in  terms  of  pitch.    In  sketch  **  you  see  the  difference  (from  a  birds  eye  view)  of  a  gable  and  hip  roof.    

Sketch  **,  Zoe  Brain,  (2014)  

GABLE  ROOF  

HIP  ROOF  

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Page 4: Logbook week 6

Concrete  Roofs:  flat  plates  of  reinforced  concrete    Structural  Steel  Framed  Roofs:  could  be  FLAT,  SLOPING  or  PORTAL  FRAMES.    •  FLAT=  primary  and  secondary  beams  (if  heavier/

concrete);  beams  and  purlins  if  lighter.    •  SLOPING=  roof  beams,  lighter  sheet  metal  roofing  and  

purlins.    •  PORTAL  FRAMES=  series  of  braced  rigid  frames  (2  

columns  and  a  beam)  with  purlins  for  the  roof  and  girts  for  the  walls  (usually  finished  with  sheet  metal).  

Trussed  Roofs:  constructed  from  open  web  type  steel  or  :mber  (trusses  fixed  together).  Slope  is  oien  determined  by  roofing  materials  selected.      Space  Frames:  3D  plate  structures.  Long  spanning  in  2  direc:ons-­‐  they’re  welded,  bolted  or  threaded  together  to  form  a  matrix  type  structure.    Gable  Roofs:  consist  of  common  raiers,  ridge  beams  and  ceiling  joists.  Out  triggers  used  for  overhang.      Hip  Roofs:  consist  of    common  raiers,  hip  raiers,  valley  raiers,  jack  raiers,  ridge  beams  and  ceiling  joists.  

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Metals:    Ferrous=  Iron  (4th  most  common  element  on  Earth).  Non  ferrous-­‐  all  other  metals  (generally  more  expensive)  and  less  likely  to  react  with  oxygen.  Alloys=  2  or  more  metals  (ferrous  alloy  contains  iron).  

Anodic  end  (more  prone  to  corrosion)  Magnesium  Zinc  Aluminium  Structural  steels  Cast  iron  Lead  Tin  Copper,  brass,  bronze  Nickel  (passive)  Titanium  Stainless  steels  (430,  304,  316)  Cathodic  end  (less  prone  to  corrosion)  

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Above  is  a  sketch  of  the  galvanic  series.  

The  further  away  items  are  on  the  table  the  more  likely  they  are  to  react  (except  steel  and  copper).  Near  sea  should  use  stainless  steel  (less  likely  to  corrode).  Most  roofs  are  galvanised  with  zinc  and  u:lise  galvanised  screws.    Can  have  a  zic  roof  and  aluminium  guYer  but  not  vice  versa.  

Aluminium  is  non  magne:c  and  non  sparking.  

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COMPRESSION:  Think:  if  removed  then  what  does  it  want  to  do-­‐  if  it  wants  to  move  out  then  it  is  under  compression  if  it  wants  to  go  down  then  its  in  tension.                

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If  voussons  in  an  arch  are  strong  enough  it  can  only  fail  by  distor:ng-­‐  spring  failure  (m  shape)  or  rota:onal  failure  (slumped  c  shape)  depending  on  weather  they  are  in  tension  or  compression.  

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•  References:  •  hYp://www.youtube.com/watch?

v=q5ms8vmhs50&feature=youtu.be  •  hYp://www.youtube.com/watch?

v=RYS_wgXGbI&feature=youtu.be  •  hYp://www.youtube.com/watch?

v=SQy3IyJy-­‐is&feature=youtu.be  •  hYp://www.youtube.com/watch?v=Zx4tM-­‐

uSaO8&feature=youtu.be  •  hYp://www.youtube.com/watch?

v=EDtxb7Pgcrw&feature=youtu.be  •  hYps://issuu.com/envs10003/docs/

week_06_guide/2?e=8943534/7434612  

Zoe  Brain  639  607